The free-verse structure is in line with the poem's message about the suffering of a human being that was deprived of freedom. It is as if the poet desperately (and in vain) tries to break all the cruel constraints that his father had suffered in the concentration camp. The verse is free, but the structure is still stanzaic - it is impossible to recover from the trauma, however hard one might try.
The free verse also brings a conversational tone to the poem, breaking it free of all artificial techniques, and giving the content primacy over the form (up to a point). The message is just too important.
Answer: These details suggest that the threats the Danes face are new to him and he has never faced this kind of problem before since he is always keeping their coast free of pirates, and raiders. They value their land and gold, therefore, they saw the Geats as a threat, thinking they wanted to take over their lands.
Answer:
it sounds fine to me, but I think it would be better as"I should've never changed the color of my braces to orange." But either work I'm pretty sure